I believe it was to her boyfriend Lukas.
Kendra does not mention her marriage on her MySpace page, but I found this:
I had a boyfriend once and he was nice but then he wasn’t nice anymore so we broke up. Sometimes we like eachother , Sometimes we hate eachother.I’m not really sure anymore. I stopped keeping track. I think he left me for Jamie Kennedy. But I’m his number one friend on Myspace and I got TWO thank-you’s on his album..so you never know. Go buy his album on itunes, bitches! www.myspace.com/stustone